Angle-gearing.



N0. 630,710. Paten'ted Aug. 8, |899'. B. W. JAMIESON.

ANGLE GEARING.

(Application filed Dec. 17, 1898.)

(No Model.)

ml I rlven tor.

Witnesses: MMMQ \M /SM'Jo Attorney@ UNITED STATES r rATENT OFFICE.

ROBERT WATSON JAMIESON, OF ROCHESTER, NEIV YORK, ASSIGNOR TO TIIEJAMIESON MANUFACTURING COMPANY, OF SAME PLACE.

ANGLE-GEARING.

SPECIFICATION forming part of :Letters ratentno. 630,710, dated Augusts, 1899.

Application filed December 17, 1898. Serial No. 699,581. (No model.)

To all whom t may concern:

Be it known that I, ROBERT WATSON JA- MIEsoN, of Rochester, in thecounty of Monroe and State of New York, have invented certain new anduseful Improvements in Angle-Gearing; and I do hereby declare thefollowing to be a full, clear, and exact description of the same,reference being had to the accompanying drawings, forming a part of thisspecification, and to the reference-numerals marked thereon.

My present invention has for its object to provide gearing particularlyadapted for the so-called chainless bicycles which will work withuniform speed and reduce the friction between the teeth of the gearingto a minimum and at the same time permit a wide degree of deflection ofthe shafts without materially aecting its ruiming qualities; and tothese ends it consists in certain improvements hereinafter fullydescribed, the novely features being pointed out particularly in theclaims at the end of this specification.

In the accompanying drawings, Figure 1 is a plan View of gearsconstructedin accordance with my invention; Fig. 2, a side elevation ofthe same, and Fig. 3 a sectional view taken on the line x a: of Fig. 1.

Similar reference-numerals in the several gures indicate similar parts.

The gearing consists generally of two wheels attached to shafts or axles1 and 2, which may be the crank-axle and the rearwardly-extendingtransmitting-shaft, respectively, of a bicycle, said gears each havingroller-teeth 3, having spherical outlines and pivoted to turn freelyupon the pins or axes 4 and 14. The axes of the teeth of one of thegears-in the present construction the driving-gear on the shaft l-arearranged parallel with the axis of said shaft, and the axes 14 of theteeth on the gear on the shaft 2 extend radially of said shaft. The pinsof the roller-teeth on the shaft l preferably pass through the ends ofngers or projections 5 on the plates 6, which plates are separated by asuitable illing-piece 7 and clamped or otherwise rigidly secured to theaxle, and the teeth of the gear onthe shaft 2 are arranged betweenfingers 8 and 9, extending from the face of the wheel 10, which may beformed of sheet or cast metal 0r otherwise.

The balls forming the teeth of the gears have smooth exteriors and areuniform in size and shape, so that in case of wear or damage the teethcan be easily replaced, and when in mesh the teeth not only will runsmoothly, either shaft being used as the driver, but on account oftheir'shape any backlash is eliminated.

It is quite important to the successful opera'tion of my device that theaxes of the teeth which are in contact should be in substantiallyparallel planes, although by reason of the shape of the teeth a slightvariation can be made without materially affecting the operation.

I clairnas my invention- 1. In angle-gearing, the combination with twogear-wheels with their axes arranged at an angle to each other, eachwheel having spherical or ball-like teeth, said teeth being revolubleupon their axes, and the axis of each tooth on each gear substantiallyparallel with the axis of the corresponding tooth of the opposite wheelwhen the two are in working contact.

2. In angle-gearing, a pair of gears having intermeshing sphericalteeth, each tooth rolling on an axis, and the axes of intermeshing teethextending in substantially parallel planes when said teeth are inworking contact.

In angle-gearing, the combination with the shaft, of a gear thereonhaving spherical teeth, each rotatable on an axis parallel with that ofthe shaft, of a second shaft extending at an angle to the first shaft,and a gear thereon having spherical gear-teeth rotatable on axesextending substantially radially of the shaft.

ROBERT WATSON JAMIESON.

